Mathematics made difficult
[by] Carl E. Linderholm. (207 pages | 1972 | ISBN: 0529045524 | DJVU/PDF )
This is a remarkable book with a remarkably innovative title. It is usual for books to claim that they make a given subject simple, or uncomplicated (whereas, in fact, they complicate the subject beyond any hope). This book starts with an unusual claim. It may or may not have made maths difficult, but it certainly makes maths real fun to explore and discover. Each problem, and the discussion that follows, is a bundle of very hilarious and often subtle humour. The author however, manages to retain the rigour and precision of maths.
Thankfully, this book is available for download from the w-w-web. There are actually many sources from where you can download.
Download the book, read it, enjoy the wisdom, and become a better maths teacher.